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1. |
Record Nr. |
UNINA9910462257003321 |
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Autore |
Haag Wendell R. |
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Titolo |
North American freshwater mussels : natural history, ecology, and conservation / / Wendell R. Haag [[electronic resource]] |
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Pubbl/distr/stampa |
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Cambridge : , : Cambridge University Press, , 2012 |
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ISBN |
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1-139-88784-X |
1-139-56388-2 |
1-283-57485-3 |
9786613887306 |
1-139-55028-4 |
1-139-55524-3 |
1-139-04821-X |
1-139-55153-1 |
1-139-54903-0 |
1-139-55399-2 |
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Descrizione fisica |
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1 online resource (xvi, 505 pages) : digital, PDF file(s) |
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Disciplina |
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Soggetti |
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Freshwater mussels - North America |
Freshwater mussels - Conservation - North America |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Title from publisher's bibliographic system (viewed on 05 Oct 2015). |
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Nota di bibliografia |
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Includes bibliographical references and index. |
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Nota di contenuto |
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1. Introduction to mussels and mussel ecology -- 2. Catching the mussel bug : a history of the study of mussel ecology in North America -- 3. Diversity and biogeography -- 4. Aquatic habitats and mussel assemblages -- 5. Host use and host infection strategies -- 6. These are very different animals : life history variation in mussels -- 7. Mussel population biology -- 8. Putting it all together : explaining patterns of mussel assemblage structure -- 9. Human exploitation of mussels -- 10. The decline of the North American mussel fauna : chronology and causes -- 11. Mussel conservation : the challenge of protecting a fragmented resource -- Appendix A. Values for life history traits of representative North American mussel species -- Appendix B. Sources for mussel assemblage data. |
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Sommario/riassunto |
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This well-illustrated book highlights freshwater mussels' fabulous diversity, amazing array of often bizarre ecological adaptations and their dire conservation plight. Summarizing and synthesizing historical and contemporary information as well as original research and analysis, the book describes the diverse array of mussel life history strategies and builds a cohesive narrative culminating in the development of explicit frameworks to explain pervasive patterns in mussel ecology. The fascinating and colorful role of mussels in human society is also described in detail, including the little-known pearl button industry of the early 1900s and the wild and often violent shell harvest of the 1990s. The final chapter details humans' efforts to save these fascinating animals and gives a prognosis for the future of the North American fauna. The book provides the first comprehensive review of mussel ecology and conservation for scientists, natural resource professionals, students and natural history enthusiasts. |
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2. |
Record Nr. |
UNINA9910787704603321 |
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Autore |
Schmidt Verena |
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Titolo |
Nutrition security in tanzania : orange-fleshed sweet potatoes and their contribution to health / / Verena Schmidt |
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Pubbl/distr/stampa |
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Hamburg, Germany : , : Anchor Academic Publishing, , 2014 |
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©2014 |
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ISBN |
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Descrizione fisica |
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1 online resource (108 p.) |
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Disciplina |
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Soggetti |
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Sweet potatoes - Harvesting |
Sweet potatoes - Nutrition |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Description based upon print version of record. |
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Nota di bibliografia |
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Includes bibliographical references. |
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Nota di contenuto |
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Nutrition security in Tanzania; Table of contents; List of Abbreviations; List of Figures; List of Tables; Abstract; 1 Introduction; 2 The United Republic of Tanzania; 2.1 Geographic data; 2.2 Demographic data; 2.3 Economy and government; 3 The Tanzania Home Economics Association; 3.1 Work of the organization; 3.2 Overview of Projects; 4 |
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Influences of the nutritional situation in Tanzania; 4.1 Traditional diet; 4.2 Food and Nutrition security; 4.3 Malnutrition - effects and causes; 5 Vitamin A - an example of nutrition disorder; 5.1 Absorption and storage; 5.2 Function; 5.3 Aspects of dosage |
6 Sweet potato - a solving approach for nutrition disorder6.1 Agricultural facts; 6.2 Cultivation and storage problems; 6.3 Physiological function; 6.4 Processing methods and effects; 7 Empirical Research; 7.1 Empirical question and hypothesis; 7.2 Research design; 7.3 Results of the survey; 7.4 Discussion and conclusion; 8 Summary; References; Annexes; References |
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Sommario/riassunto |
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Particularly in developing countries nearly one billion people are effected by nutrition insecurity in form of under- or malnutrition (FAO 2010, p. 1). Merely by the expression of vitamin A-deficiency an estimate of up to 500,000 children go blind worldwide every year (WHO 2011). This survey deals with a solution approach in form of the contribution made by the orange-fleshed sweet potato (OFSP) and its afford towards nutrition security in rural areas of Mwanza, Tanzania. With help of the partner organization TAHEA, a retrospective population-based study of the nutritional status of rural popu |
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